What are the odds?

Question

What is the probability that a 5 digit number where the first number may not be zero randomly generated from among the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and is the number 27272?

Answer 1

Hello, Harry.

we have 5 digits number and first digit we can use 9 different numbers;

other four digits we can use any of the 10 numbers;

we can create 9*10*10*10*10=90000 different numbers with given number choices.

since we have only one 27272 among these numbers;

the probability is 1/90000

Hope that helps